It might've been power leakage from a Syndic spy drone, so we investigated.

The spy drones, remnant of the flock Vassily had unleashed, waited patiently behind the vents.

Obama requests Iran return US spy drone - video (53 sec)

No transmissions had been received from the comet-scarred gas giant, no wreckage found in the system by spy drones.

Willie and Sam progressed from arguing the possi- ble connection to the druids to using Willie's spy drone to monitor the progress of the police.

Sam noted distortion on the water surface and searched the shadows until he found Willie's spy drone, hovering near the vaulted ceiling.

Unlike the smaller spy drone, this machine was armed and ar- mored.

The hovering spy drone's rotors cut out, and it dropped into the river with a splat.

Iran could deal a significant blow to the US military if it has captured a top secret American spy drone.

It is the world's first "invisible spy drone," a new class of remote-controlled stealth aircraft.